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ReaderBase.cpp
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ReaderBase.cpp
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/**
* @file
* @brief Source file for ReaderBase class
* @author Jonathan Thomas <jonathan@openshot.org>
*
* @ref License
*/
/* LICENSE
*
* Copyright (c) 2008-2019 OpenShot Studios, LLC
* <http://www.openshotstudios.com/>. This file is part of
* OpenShot Library (libopenshot), an open-source project dedicated to
* delivering high quality video editing and animation solutions to the
* world. For more information visit <http://www.openshot.org/>.
*
* OpenShot Library (libopenshot) is free software: you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* OpenShot Library (libopenshot) is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../include/ReaderBase.h"
using namespace openshot;
/// Constructor for the base reader, where many things are initialized.
ReaderBase::ReaderBase()
{
// Initialize info struct
info.has_video = false;
info.has_audio = false;
info.has_single_image = false;
info.duration = 0.0;
info.file_size = 0;
info.height = 0;
info.width = 0;
info.pixel_format = -1;
info.fps = Fraction();
info.video_bit_rate = 0;
info.pixel_ratio = Fraction();
info.display_ratio = Fraction();
info.vcodec = "";
info.video_length = 0;
info.video_stream_index = -1;
info.video_timebase = Fraction();
info.interlaced_frame = false;
info.top_field_first = true;
info.acodec = "";
info.audio_bit_rate = 0;
info.sample_rate = 0;
info.channels = 0;
info.channel_layout = LAYOUT_MONO;
info.audio_stream_index = -1;
info.audio_timebase = Fraction();
// Init parent clip
parent = NULL;
}
// Display file information
void ReaderBase::DisplayInfo() {
std::cout << std::fixed << std::setprecision(2) << std::boolalpha;
std::cout << "----------------------------" << std::endl;
std::cout << "----- File Information -----" << std::endl;
std::cout << "----------------------------" << std::endl;
std::cout << "--> Has Video: " << info.has_video << std::endl;
std::cout << "--> Has Audio: " << info.has_audio << std::endl;
std::cout << "--> Has Single Image: " << info.has_single_image << std::endl;
std::cout << "--> Duration: " << info.duration << " Seconds" << std::endl;
std::cout << "--> File Size: " << double(info.file_size) / 1024 / 1024 << " MB" << std::endl;
std::cout << "----------------------------" << std::endl;
std::cout << "----- Video Attributes -----" << std::endl;
std::cout << "----------------------------" << std::endl;
std::cout << "--> Width: " << info.width << std::endl;
std::cout << "--> Height: " << info.height << std::endl;
std::cout << "--> Pixel Format: " << info.pixel_format << std::endl;
std::cout << "--> Frames Per Second: " << info.fps.ToDouble() << " (" << info.fps.num << "/" << info.fps.den << ")" << std::endl;
std::cout << "--> Video Bit Rate: " << info.video_bit_rate/1000 << " kb/s" << std::endl;
std::cout << "--> Pixel Ratio: " << info.pixel_ratio.ToDouble() << " (" << info.pixel_ratio.num << "/" << info.pixel_ratio.den << ")" << std::endl;
std::cout << "--> Display Aspect Ratio: " << info.display_ratio.ToDouble() << " (" << info.display_ratio.num << "/" << info.display_ratio.den << ")" << std::endl;
std::cout << "--> Video Codec: " << info.vcodec << std::endl;
std::cout << "--> Video Length: " << info.video_length << " Frames" << std::endl;
std::cout << "--> Video Stream Index: " << info.video_stream_index << std::endl;
std::cout << "--> Video Timebase: " << info.video_timebase.ToDouble() << " (" << info.video_timebase.num << "/" << info.video_timebase.den << ")" << std::endl;
std::cout << "--> Interlaced: " << info.interlaced_frame << std::endl;
std::cout << "--> Interlaced: Top Field First: " << info.top_field_first << std::endl;
std::cout << "----------------------------" << std::endl;
std::cout << "----- Audio Attributes -----" << std::endl;
std::cout << "----------------------------" << std::endl;
std::cout << "--> Audio Codec: " << info.acodec << std::endl;
std::cout << "--> Audio Bit Rate: " << info.audio_bit_rate/1000 << " kb/s" << std::endl;
std::cout << "--> Sample Rate: " << info.sample_rate << " Hz" << std::endl;
std::cout << "--> # of Channels: " << info.channels << std::endl;
std::cout << "--> Channel Layout: " << info.channel_layout << std::endl;
std::cout << "--> Audio Stream Index: " << info.audio_stream_index << std::endl;
std::cout << "--> Audio Timebase: " << info.audio_timebase.ToDouble() << " (" << info.audio_timebase.num << "/" << info.audio_timebase.den << ")" << std::endl;
std::cout << "----------------------------" << std::endl;
std::cout << "--------- Metadata ---------" << std::endl;
std::cout << "----------------------------" << std::endl;
// Iterate through metadata
for (auto it : info.metadata)
std::cout << "--> " << it.first << ": " << it.second << std::endl;
}
// Generate Json::Value for this object
Json::Value ReaderBase::JsonValue() const {
// Create root json object
Json::Value root;
root["has_video"] = info.has_video;
root["has_audio"] = info.has_audio;
root["has_single_image"] = info.has_single_image;
root["duration"] = info.duration;
std::stringstream filesize_stream;
filesize_stream << info.file_size;
root["file_size"] = filesize_stream.str();
root["height"] = info.height;
root["width"] = info.width;
root["pixel_format"] = info.pixel_format;
root["fps"] = Json::Value(Json::objectValue);
root["fps"]["num"] = info.fps.num;
root["fps"]["den"] = info.fps.den;
root["video_bit_rate"] = info.video_bit_rate;
root["pixel_ratio"] = Json::Value(Json::objectValue);
root["pixel_ratio"]["num"] = info.pixel_ratio.num;
root["pixel_ratio"]["den"] = info.pixel_ratio.den;
root["display_ratio"] = Json::Value(Json::objectValue);
root["display_ratio"]["num"] = info.display_ratio.num;
root["display_ratio"]["den"] = info.display_ratio.den;
root["vcodec"] = info.vcodec;
std::stringstream video_length_stream;
video_length_stream << info.video_length;
root["video_length"] = video_length_stream.str();
root["video_stream_index"] = info.video_stream_index;
root["video_timebase"] = Json::Value(Json::objectValue);
root["video_timebase"]["num"] = info.video_timebase.num;
root["video_timebase"]["den"] = info.video_timebase.den;
root["interlaced_frame"] = info.interlaced_frame;
root["top_field_first"] = info.top_field_first;
root["acodec"] = info.acodec;
root["audio_bit_rate"] = info.audio_bit_rate;
root["sample_rate"] = info.sample_rate;
root["channels"] = info.channels;
root["channel_layout"] = info.channel_layout;
root["audio_stream_index"] = info.audio_stream_index;
root["audio_timebase"] = Json::Value(Json::objectValue);
root["audio_timebase"]["num"] = info.audio_timebase.num;
root["audio_timebase"]["den"] = info.audio_timebase.den;
// Append metadata map
root["metadata"] = Json::Value(Json::objectValue);
for (const auto it : info.metadata)
root["metadata"][it.first] = it.second;
// return JsonValue
return root;
}
// Load Json::Value into this object
void ReaderBase::SetJsonValue(const Json::Value root) {
// Set data from Json (if key is found)
if (!root["has_video"].isNull())
info.has_video = root["has_video"].asBool();
if (!root["has_audio"].isNull())
info.has_audio = root["has_audio"].asBool();
if (!root["has_single_image"].isNull())
info.has_single_image = root["has_single_image"].asBool();
if (!root["duration"].isNull())
info.duration = root["duration"].asDouble();
if (!root["file_size"].isNull())
info.file_size = std::stoll(root["file_size"].asString());
if (!root["height"].isNull())
info.height = root["height"].asInt();
if (!root["width"].isNull())
info.width = root["width"].asInt();
if (!root["pixel_format"].isNull())
info.pixel_format = root["pixel_format"].asInt();
if (!root["fps"].isNull() && root["fps"].isObject()) {
if (!root["fps"]["num"].isNull())
info.fps.num = root["fps"]["num"].asInt();
if (!root["fps"]["den"].isNull())
info.fps.den = root["fps"]["den"].asInt();
}
if (!root["video_bit_rate"].isNull())
info.video_bit_rate = root["video_bit_rate"].asInt();
if (!root["pixel_ratio"].isNull() && root["pixel_ratio"].isObject()) {
if (!root["pixel_ratio"]["num"].isNull())
info.pixel_ratio.num = root["pixel_ratio"]["num"].asInt();
if (!root["pixel_ratio"]["den"].isNull())
info.pixel_ratio.den = root["pixel_ratio"]["den"].asInt();
}
if (!root["display_ratio"].isNull() && root["display_ratio"].isObject()) {
if (!root["display_ratio"]["num"].isNull())
info.display_ratio.num = root["display_ratio"]["num"].asInt();
if (!root["display_ratio"]["den"].isNull())
info.display_ratio.den = root["display_ratio"]["den"].asInt();
}
if (!root["vcodec"].isNull())
info.vcodec = root["vcodec"].asString();
if (!root["video_length"].isNull())
info.video_length = std::stoll(root["video_length"].asString());
if (!root["video_stream_index"].isNull())
info.video_stream_index = root["video_stream_index"].asInt();
if (!root["video_timebase"].isNull() && root["video_timebase"].isObject()) {
if (!root["video_timebase"]["num"].isNull())
info.video_timebase.num = root["video_timebase"]["num"].asInt();
if (!root["video_timebase"]["den"].isNull())
info.video_timebase.den = root["video_timebase"]["den"].asInt();
}
if (!root["interlaced_frame"].isNull())
info.interlaced_frame = root["interlaced_frame"].asBool();
if (!root["top_field_first"].isNull())
info.top_field_first = root["top_field_first"].asBool();
if (!root["acodec"].isNull())
info.acodec = root["acodec"].asString();
if (!root["audio_bit_rate"].isNull())
info.audio_bit_rate = root["audio_bit_rate"].asInt();
if (!root["sample_rate"].isNull())
info.sample_rate = root["sample_rate"].asInt();
if (!root["channels"].isNull())
info.channels = root["channels"].asInt();
if (!root["channel_layout"].isNull())
info.channel_layout = (ChannelLayout) root["channel_layout"].asInt();
if (!root["audio_stream_index"].isNull())
info.audio_stream_index = root["audio_stream_index"].asInt();
if (!root["audio_timebase"].isNull() && root["audio_timebase"].isObject()) {
if (!root["audio_timebase"]["num"].isNull())
info.audio_timebase.num = root["audio_timebase"]["num"].asInt();
if (!root["audio_timebase"]["den"].isNull())
info.audio_timebase.den = root["audio_timebase"]["den"].asInt();
}
if (!root["metadata"].isNull() && root["metadata"].isObject()) {
for( Json::Value::const_iterator itr = root["metadata"].begin() ; itr != root["metadata"].end() ; itr++ ) {
std::string key = itr.key().asString();
info.metadata[key] = root["metadata"][key].asString();
}
}
}